CN202002618U - Multi-parameter visual measuring equipment for bearing inner ring based on comparison measuring method - Google Patents
Multi-parameter visual measuring equipment for bearing inner ring based on comparison measuring method Download PDFInfo
- Publication number
- CN202002618U CN202002618U CN2011200945084U CN201120094508U CN202002618U CN 202002618 U CN202002618 U CN 202002618U CN 2011200945084 U CN2011200945084 U CN 2011200945084U CN 201120094508 U CN201120094508 U CN 201120094508U CN 202002618 U CN202002618 U CN 202002618U
- Authority
- CN
- China
- Prior art keywords
- bearing inner
- inner race
- cylinder
- bearing
- measuring apparatus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title abstract description 17
- 230000000007 visual effect Effects 0.000 title abstract 3
- 238000005259 measurement Methods 0.000 claims abstract description 83
- 230000007246 mechanism Effects 0.000 claims abstract description 56
- 230000003993 interaction Effects 0.000 claims abstract description 15
- 238000007599 discharging Methods 0.000 claims description 23
- 241000269799 Perca fluviatilis Species 0.000 claims description 20
- 238000012216 screening Methods 0.000 claims description 15
- 230000000052 comparative effect Effects 0.000 claims description 12
- 238000000691 measurement method Methods 0.000 claims description 12
- 238000000605 extraction Methods 0.000 claims description 7
- 230000004888 barrier function Effects 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 210000000078 claw Anatomy 0.000 claims description 3
- 238000013500 data storage Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 19
- 239000000463 material Substances 0.000 abstract description 3
- 238000012634 optical imaging Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 238000012937 correction Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000012372 quality testing Methods 0.000 description 1
- 238000010223 real-time analysis Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Images
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Abstract
The utility model discloses a multi-parameter visual measuring equipment for a bearing inner ring based on a comparison measuring method, which comprises a swinging rod type fence material inlet mechanism, an axial parameter measuring device, a radial parameter measuring device, a conveying mechanism, a sorting mechanism, a programmable logic controller (PLC) control module, a host machine control module and a man-machine interaction module. The measuring equipment uses the standard high-precision bearing inner ring as the reference element and uses a camera as a comparison measuring instrument, and on the basis of calculating positioning errors of the bearing outer ring, a tested bearing outer ring is compared with the reference element for sorting qualified products, rework products and rejection products. The multi-parameter visual measuring equipment realizes the full automatic comparison measurement on the bearing inner ring inner hole diameter, the outer diameter, the groove diameter, the groove curvature radius and the width, and in addition, the bottleneck problem of high system cost caused by high requirement on camera resolution during high-precision detection and large-dimension detection of the bearing inner ring is solved.
Description
Technical field
The utility model relates to measures and field tests particularly a kind of bearing inner race multiparameter vision measurement equipment of mensuration based on the comparison.
Background technology
Bearing is important basic components in the mechanical industry, in the production run of bearing, the usability and the life-span of the processing precision direct influence bearing of each ingredient of bearing are so be the major issue that manufacturer is concerned about to the quality testing of each parameter of bearing inner race always.At present, most Production of bearing producer still relies on surveying instruments such as mechanical type, electronic type, pneumatic type and optical profile type to come bearing inner race is carried out offline inspection, but because the turnout of bearing inner race is big, adopt the mode of manual detection to be difficult to realize that the online detection of product detects with total, and owing to influenced by human factor, the method that this dependence manpower detects exists labour intensity greatly, easily to introduce shortcomings such as personal error, is difficult to satisfy the quality control demand of part in enormous quantities.
Standardization and legalization along with product quality management, online detection and the total cry that detects are more and more higher, and vision detection technology is as a kind of non-contact detecting means, it is fast to have detection speed, testing result is stable, automaticity is high and possess online detection, advantages such as real-time analysis and control in real time, vision-based detection for mechanical component, basically adopt at present the method for global measuring, detect and the large-scale part vision-based detection for high-precision vision, checkout equipment is very high to the resolution requirement of camera, has so just increased the cost of checkout equipment greatly, and then has limited the promotion and application of equipment.Under such technical background, proposition of the present utility model just has certain theory and engineering using value.
Summary of the invention
The purpose of this utility model is to be the online detection and the total multiparameter vision measurement equipment that a kind of mensuration based on the comparison is provided that detects of bearing inner race, has not only solved the labour intensity that exists when adopting manual detection and has introduced problems such as personal error greatly and easily.And, solved bearing inner race and when high Precision Detection and large scale detect, required too high and cause the too high bottleneck problem of equipment cost camera resolution by adopting comparative measurement method.
The purpose of this utility model is achieved through the following technical solutions.
A kind of bearing inner race multiparameter vision measurement equipment of mensuration based on the comparison comprises oscillating rod type fence feeding mechanism, axially parameter measuring apparatus, radially parameter measuring apparatus, conveying mechanism, sorting mechanism, PLC control module, upper computer control module and human-computer interaction module, it is characterized in that being equipped with above frame the oscillating rod type fence feeding mechanism that the bearing inner race in the feed chute is conveyed into one by one axial measurement station; Be equipped with by the axial parameter measuring apparatus of comparative measurement method measurement bearing inner race diameter of bore and variation, external diameter and variation with by the trench diameter of comparative measurement method measurement bearing inner race and the radially parameter measuring apparatus of variation, groove radius of curvature and variation, width and variation at the middle part of frame; Below frame, be equipped be in that bearing inner race in the axial measurement station is transported to the conveying mechanism of radial measurement station and according to measurement result with bearing inner race according to certified products, reprocessed products and scrap are carried out the sorting mechanism of sorting and grouping, the center line of oscillating rod type fence feeding mechanism outlet wherein, axially the center line of the center line of parameter measuring apparatus and conveying mechanism inlet is located along the same line, radially parameter measuring apparatus and axial parameter measuring apparatus are contour, and be positioned at the sorting mechanism porch directly over, radially parameter measuring apparatus and axial parameter measuring apparatus are all by signal wire with to the data acquisition card connection in the upper computer control module of view data execution pre-service and feature extraction, be used for the collection position sensor input signal, and to cylinder, the PLC control module that the motion of mechanical arm and motor is accurately controlled is connected with upper computer control module by serial ports, be used for user input instruction, calibrating parameters and default tolerance, simultaneously in real time display capture image and measurement result, and the human-computer interaction module that carries out data storage and statistical study simultaneously is connected with PLC control module and upper computer control module respectively.
Described oscillating rod type fence feeding mechanism includes hopper, moves cylinder, Z direction slide rail, link-type ejecting mechanism, Z direction mechanical arm and lifting slide unit near switch, oscillating rod type fence, push rod, Z direction, the oscillating rod type fence that is used for that the bearing inner race of feed chute is carried one by one comprises dwang, preceding insulated column, middle insulated column, back insulated column, barrier board and cylinder fork, wherein dwang is installed on the frame, and be connected with preceding insulated column by revolute pair, the cylinder fork be positioned at push rod directly over, and be connected with barrier board by screw thread; Be used for cylinder fork jack-up, and the push rod of drive oscillating rod type fence swing is installed on the lifting slide unit; The Z direction moves cylinder and is installed on the Z direction slide rail, and its piston can be pushed to the lifting slide unit the place ahead of axial measurement station; The two ends that are used for the bearing inner race that Z direction mechanical arm grasps is pushed to the link-type ejecting mechanism of axial measurement station are connected with the lifting slide unit with Z direction mechanical arm by screw thread.
Described axial parameter measuring apparatus comprises pneumatic motive force chuck, axially measures camera, light source, camera lens, position adjustments worktable and bearing release dish, external diameter with bearing inner race is a positioning reference, and finish the pneumatic drive mechanism that the pneumatic motive force chuck of the clamping of bearing inner race and location is comprised chuck body, movable jaw and claw, wherein be fixed with the metal hemisphere that can improve the workpiece bearing accuracy on the movable jaw; Axially measuring camera is installed on the position adjustments worktable relative with pneumatic motive force chuck; Be used for the bearing release dish that tested bearing inner race is pushed on the calliper formula carriage is installed the chuck body of pneumatic motive force chuck.
Described radially parameter measuring apparatus comprises internal-expansion type spring perch, radial measurement camera, light source, camera lens, position adjustments worktable and bearing release dish, internal diameter with bearing inner race is a positioning reference, and finish the clamping of bearing inner race and the internal-expansion type spring perch of location are comprised clamp body, pull bar, internal-expansion type collet chuck and anchor clamps driving mechanism, wherein be fixed with the metal hemisphere that can improve the workpiece bearing accuracy on the internal-expansion type collet chuck; The radial measurement camera is installed on the position adjustments worktable of internal-expansion type spring perch one side; Be used for tested bearing inner race is pushed to the clamp body that bearing release dish on the blow tank is installed in the internal-expansion type spring perch.
Described conveying mechanism comprises that calliper formula carriage, traversing cylinder, cross sliding rail, lift cylinder, lifting support frame, Y direction push cylinder and Y direction mechanical arm, the calliper formula carriage that is used for traversing measured bearing inner ring be positioned at pneumatic motive force chuck under; Traversing cylinder is installed on the cross sliding rail, and its piston can be pushed to the bearing inner race of placing in the calliper formula carriage in the Y direction mechanical arm; The lift cylinder that is used to promote the measured bearing inner ring is installed in lifting support frame, and its piston can be pushed to the bearing inner race that grasps in the Y direction mechanical arm position contour with the radial measurement station; Be used for that the Y direction that the bearing inner race that Y direction mechanical arm grasps is pushed to the radial measurement station is pushed cylinder and be installed in Y direction slide rail.
Described sorting mechanism comprises near switch, sorting cylinder, reprocessed products charge chute, certified products charge chute, scrap charge chute, screening slide plate, fixed head and blow tank, the sorting cylinder is installed on the directions X slide rail, and the discharging opening that its piston can push on the screening slide plate moves to reprocessed products charge chute top and scrap charge chute top; The screening slide plate is hindered by the piston that is threaded in the sorting cylinder, and has the discharging opening that can allow bearing inner race pass through on it; Fixed head is positioned at the top of screening slide plate, and has reprocessed products discharging opening, certified products discharging opening and scrap discharging opening on it.
Workflow of the present utility model mainly is divided into pan feeding, conveying, measurement, sorting and five processes of man-machine interaction.The principle of work of each process is as follows.
The material loading principle: the user presses after the start button, the push rod that the Z direction moves on the cylinder drive lifting slide unit moves downward, this moment, the oscillating rod type fence separated with push rod, and the oscillating rod type fence is finished bearing inner race moving between oscillating rod type fence insulated column by deadweight to lower swing, when bearing inner race from the oscillating rod type fence by and roll into the lifting slide unit after, Z direction mechanical arm clamps bearing inner race, after this Z direction moves cylinder and drives the bearing inner race that grasps in the Z direction mechanical arm and move downward, when arriving Y orientation measurement device, the link-type ejecting mechanism pushes to the bearing inner race in the Z direction mechanical arm Y direction clamping station again, last pneumatic motive force chuck clamping and positioning bearing inner race.
Feeding principle: after axially parameter measuring apparatus is measured and finished, bearing release dish is released bearing inner race from pneumatic motive force chuck, bearing drops in the calliper formula carriage by deadweight, traversing cylinder pushes to the bearing inner race in the calliper formula carriage Y direction mechanical arm place again, Y direction mechanical arm grasps after the bearing inner race, and traversing cylinder is back to initial position.After this, lift cylinder pushes to radial measurement station the place ahead with the bearing inner race that grasps in the Y direction mechanical arm, and the Y direction pushes the clamping station that cylinder pushes to bearing inner race the internal-expansion type spring perch again, and last internal-expansion type spring perch is the clamping and positioning bearing inner race again.
Measuring principle: before measuring, the optical imaging system of X, Y direction at first carries out position calibration by the position adjustments worktable, and carries out the demarcation of camera pixel by the high precision standard gauge block.After PC receives the location end signal, X, the optical imaging system of Y direction is caught part X immediately, the two-dimensional geometry characteristic image of Y direction, the two-dimensional geometry characteristic image of part converts digital signal to by A/D, PC comes images acquired by data collecting card again, afterwards the view data that collects is carried out arithmetical operations such as pre-service and feature extraction, specifically comprise the view data smoothing processing, the gray level image binaryzation, rim detection, Hough conversion and sub-pix segmentation, owing to before measuring, finished the pixel of optical imaging system is demarcated and error correction, so according to the reference standard that obtains after demarcating and revising, the positioning error of calculating bearing inner race when adopting comparative measurement method again just can directly be measured the size and the variation of each detected parameters of bearing inner race, at last, PC is divided into certified products according to default size and the variation of allowing with bearing inner race again, reprocessed products and scrap three classes, and by serial ports measurement result is sent to PLC, X wherein, axially the measuring principle of parameter measuring apparatus is as follows:
The measuring principle of axial parameter measuring apparatus
Axially parameter measuring apparatus adopts minimum two-multiply law to measure bearing inner race diameter of bore and variation, external diameter and variation, the general equation of circle as shown in Equation (1), for the match of circular curve, the coordinate (x of measurement point
i, y
i) can there be certain residual error e with formula (1)
i, its computing formula as shown in Equation (2).
x
2+y
2+Ax+By+C＝0 (1)
e
i＝x
i 2+y
i 2+Ax
i+By
i+C (2)
In order to make the residual error minimum, according to the principle that least square method is approached, ask the quadratic sum of error earlier, make the quadratic sum minimum of error solve parameter A, B, C again, calculate the center of circle (x at last again
0, y
0) and the size of diameter D, its computing formula is as shown in Equation (3).
In order to measure the variation of bearing inner race diameter of bore and external diameter, after bearing inner race is carried out comparing and measuring of ad-hoc location, drive bearing inner race by the power chuck stepper motor and rotate the measurement of carrying out the next position, until the whole measured zone that measures bearing inner race, just can calculate the variation of diameter of bore and external diameter this moment according to measurement result.
The measuring principle of parameter measuring apparatus radially
Radially parameter measuring apparatus adopts the endoporus of bearing inner race to measure trench diameter and variation, groove radius of curvature and variation, width and the variation of bearing inner race as positioning reference, owing to adopt the mode that compares and measures, so also need consider locating error for fixtures, because the setting element level, the computing formula of its positioning error as shown in Equation (4).
T wherein
dBe lasso endoporus dimensional variations amount, T
DBe the trench diameter variation of being asked, owing to measured the variation of hole dimension in the lasso before this, the trench diameter that event just can calculate according to formula (4), the measurement of trench diameter variation drives bearing inner race by the spring perch stepper motor and rotates the measurement of carrying out the next position, until the whole measured zone that measures the bearing inner race groove, calculate the variation of trench diameter at last again according to measurement result.
Groove radius of curvature and variation, width and variation adopt the mode of global measuring to measure, so irrelevant with positioning error.
Grading principle: PLC is according to testing result, can push the discharging opening of screening on the slide plate by the sorting cylinder and move to certified products discharging opening, reprocessed products discharging opening and scrap discharging opening place in the fixed head, after this bearing inner race rolls down along blow tank by deadweight and just can fall in the corresponding charge chute.
The man-machine interaction principle: the user imports startup, stops and anxious instruction such as stops by button, and come default size of optical parametric, location parameter, pixel calibrating parameters and the part of optical imaging system behind the input calibration and the variation of allowing by display, export the measurement image and the measured zone of optical imaging system simultaneously by display.Size report display device comes the measurement result of size, shape and the location parameter stored in the video data storehouse by control chart, and shows corresponding process capability index and machine capability index simultaneously.
Compared with prior art, the utlity model has following advantage:
1) comparative measurement method
Compare with overall direct measuring method, the utility model is owing to adopted comparative measurement method, with the high-precision bearing inner ring of standard as standard, with camera surveying instrument as a comparison, on the basis of calculation bearing outer ring positioning error, the sorting of certified products, reprocessed products and scrap is relatively carried out in measured bearing outer ring and standard, under the prerequisite that adopts equal resolution camera, the measuring accuracy of device hardware can obtain lifting at double, simultaneously, adopt comparative measurement method can also realize the high-acruracy survey of large-scale part.
2) multiparameter is measured automatically
This equipment has not only been realized the full-automation of material loading, conveying and the sorting of bearing inner race, and can realize all automatic measurement to bearing inner race diameter of bore, external diameter, trench diameter, groove radius of curvature and bearing width, can directly be connected in series to the online detection and total detection of carrying out bearing inner race in the production line.
3) measurement result is carried out the statistical quality analysis
Owing to adopted methods such as process capability index, machine capability index and control chart that the measurement result of bearing inner race is carried out statistic of attribute, can monitor the fluctuation situation of process quality in real time, judge whether operation is stable.
Description of drawings
Fig. 1 is the front view of the utility model general structure;
Fig. 2 is the vertical view of the axial parameter measuring apparatus of the utility model;
Fig. 3 is the radially vertical view of parameter measuring apparatus of the utility model;
Fig. 4 is the vertical view of the utility model sorting mechanism;
Fig. 5 is the radially measuring principle synoptic diagram of parameter measuring apparatus of the utility model;
Fig. 6 is a product principle of work synoptic diagram of the present utility model;
Fig. 7 is a product working routine process flow diagram of the present utility model;
Among the figure: 1 is feed chute; 2 is bearing inner race; 3 is near switch; 4 is the oscillating rod type fence; 5 is push rod; 6 move cylinder for the Z direction; 7 is Z direction slide rail; 8 is the link-type ejecting mechanism; 9 is Z direction mechanical arm; 10 are the lifting slide unit; 11 is pneumatic motive force chuck; 12 is axially to measure camera; 13 is calliper formula carriage; 14 is traversing cylinder; 15 is cross sliding rail; 16 is bearing release dish; 17 is the internal-expansion type spring perch; 18 is lift cylinder; 19 are Y direction propelling movement cylinder; 20 are the sorting cylinder; 21 is the reprocessed products charge chute; 22 is the certified products charge chute; 23 is the scrap charge chute; 24 are the screening slide plate; 25 is fixed head; 26 is blow tank; 27 is computing machine; 28 is the position adjustments worktable; 29 is the radial measurement camera; 30 is Y direction mechanical arm.
Embodiment
The utility model will be described further by following examples.
The front view of the bearing inner race multiparameter vision measurement outfit of equipment structure of a kind of mensuration based on the comparison of the present utility model as shown in Figure 1, axially the vertical view of parameter measuring apparatus as shown in Figure 2, radially the vertical view of parameter measuring apparatus as shown in Figure 3, the vertical view of sorting mechanism as shown in Figure 4, this equipment comprises oscillating rod type fence feeding mechanism, axial parameter measuring apparatus, parameter measuring apparatus radially, conveying mechanism, sorting mechanism, the PLC control module, upper computer control module and human-computer interaction module is characterized in that being equipped with the oscillating rod type fence feeding mechanism that the bearing inner race (2) in the feed chute (1) is conveyed into one by one axial measurement station above frame; Be equipped with by the axial parameter measuring apparatus of comparative measurement method measurement bearing inner race diameter of bore and variation, external diameter and variation with by the trench diameter of comparative measurement method measurement bearing inner race and the radially parameter measuring apparatus of variation, groove radius of curvature and variation, width and variation at the middle part of frame; Below frame, be equipped be in that bearing inner race in the axial measurement station is transported to the conveying mechanism of radial measurement station and according to measurement result with bearing inner race according to certified products, reprocessed products and scrap are carried out the sorting mechanism of sorting and grouping, the center line of oscillating rod type fence feeding mechanism outlet wherein, axially the center line of the center line of parameter measuring apparatus and conveying mechanism inlet is located along the same line, radially parameter measuring apparatus and axial parameter measuring apparatus are contour, and be positioned at the sorting mechanism porch directly over, radially parameter measuring apparatus and axial parameter measuring apparatus are all by signal wire with to the data acquisition card connection in the upper computer control module of view data execution pre-service and feature extraction, be used for the collection position sensor input signal, and to cylinder, the PLC control module that the motion of mechanical arm and motor is accurately controlled is connected with upper computer control module by serial ports, be used for user input instruction, calibrating parameters and default tolerance, simultaneously in real time display capture image and measurement result, and the human-computer interaction module that carries out data storage and statistical study simultaneously is connected with PLC control module and upper computer control module respectively.
Described oscillating rod type fence feeding mechanism includes hopper (1), near switch (3), oscillating rod type fence (4), push rod (5), the Z direction moves cylinder (6), Z direction slide rail (7), link-type ejecting mechanism (8), Z direction mechanical arm (9) and lifting slide unit (10), be used for the oscillating rod type fence (4) that the bearing inner race (2) of feed chute (1) is carried is one by one comprised dwang (4-1), preceding insulated column (4-2), middle insulated column (4-3), back insulated column (4-4), barrier board (4-5) and cylinder fork (4-6), wherein dwang is installed on the frame, and be connected with preceding insulated column by revolute pair, the cylinder fork be positioned at push rod (5) directly over, and be connected with barrier board by screw thread; Be used for cylinder fork jack-up, and the push rod (5) of drive oscillating rod type fence (4) swing is installed on the lifting slide unit (10); The Z direction moves cylinder (6) and is installed on the Z direction slide rail (7), and its piston can be pushed to lifting slide unit (10) the place ahead of axial measurement station; The two ends that are used for the bearing inner race (2) that Z direction mechanical arm (9) grasps is pushed to the link-type ejecting mechanism (8) of axial measurement station are connected with lifting slide unit (10) with Z direction mechanical arm (9) by screw thread.
Described axial parameter measuring apparatus comprises pneumatic motive force chuck (11), axially measures camera (12), light source, camera lens, position adjustments worktable (28) and bearing release dish (16), external diameter with bearing inner race (2) is a positioning reference, and finish the clamping of bearing inner race (2) and the pneumatic motive force chuck (11) of location are comprised chuck body, movable jaw and claw pneumatic drive mechanism, wherein be fixed with the metal hemisphere that can improve the workpiece bearing accuracy on the movable jaw; Axially measuring camera (12) is installed on the position adjustments worktable (28) relative with pneumatic motive force chuck (11); Be used for the bearing release dish (16) that tested bearing inner race is pushed on the calliper formula carriage (13) is installed the chuck body of pneumatic motive force chuck (11).
Described radially parameter measuring apparatus comprises internal-expansion type spring perch (17), radial measurement camera (29), light source, camera lens, position adjustments worktable (28) and bearing release dish (16), internal diameter with bearing inner race (2) is a positioning reference, and finish the clamping of bearing inner race (2) and the internal-expansion type spring perch (17) of location are comprised clamp body, pull bar, internal-expansion type collet chuck and anchor clamps driving mechanism, wherein be fixed with the metal hemisphere that can improve the workpiece bearing accuracy on the internal-expansion type collet chuck; Radial measurement camera (12) is installed on the position adjustments worktable (28) of internal-expansion type spring perch (17) one sides; Be used for tested bearing inner race is pushed to the clamp body that bearing release dish (16) on the blow tank (26) is installed in internal-expansion type spring perch (17).
Described conveying mechanism comprises that calliper formula carriage (13), traversing cylinder (14), cross sliding rail (15), lift cylinder (18), lifting support frame, Y direction push cylinder (19) and Y direction mechanical arm (30), the calliper formula carriage (13) that is used for traversing measured bearing inner ring be positioned at pneumatic motive force chuck (11) under; Traversing cylinder (14) is installed on the cross sliding rail (15), and its piston can be pushed to the bearing inner race of placing in the calliper formula carriage (13) in the Y direction mechanical arm (30); The lift cylinder (18) that is used to promote the measured bearing inner ring is installed in lifting support frame, and its piston can be pushed to the position contour with the radial measurement station with the bearing inner race that grasps in the Y direction mechanical arm (30); Be used for that the Y direction that the bearing inner race that Y direction mechanical arm (30) grasps is pushed to the radial measurement station is pushed cylinder (19) and be installed in Y direction slide rail.
Described sorting mechanism comprises near switch, sorting cylinder (20), reprocessed products charge chute (21), certified products charge chute (22), scrap charge chute (23), screening slide plate (24), fixed head (25) and blow tank (26), sorting cylinder (20) is installed on the directions X slide rail, and the discharging opening that its piston can push on the screening slide plate (24) moves to reprocessed products charge chute top and scrap charge chute top; Screening slide plate (24) is hindered by the piston that is threaded in sorting cylinder (20), and has the discharging opening that can allow bearing inner race pass through on it; Fixed head (25) is positioned at the top of screening slide plate (24), and has reprocessed products discharging opening, certified products discharging opening and scrap discharging opening on it.
The utility model radially parameter measuring apparatus the measuring principle synoptic diagram as shown in Figure 5, wherein d represents the diameter of bore of bearing inner race, D represents the external diameter of bearing inner race, F
1The coboundary of expression acceptability limit, F
2The lower boundary of expression acceptability limit, φ
MinThe minimum value of expression trench diameter size, φ
MaxThe minimum value of expression trench diameter size.When internal-expansion type spring perch horizontal positioned, two extreme positions that bearing inner race may occur when the location are respectively
1) when bearing inner race endoporus maximum, external diameter hour, the trench diameter size minimum that measure this moment, the F in the corresponding diagram
2
2) when bearing inner race endoporus minimum, when external diameter is maximum, the trench diameter size maximum that measure this moment, the extreme position in the corresponding diagram;
So according to the extreme position method, positioning error is
Owing to measured the variation of hole dimension in the lasso before this, so just can calculate the diameter of groove according to this formula, the measurement of trench diameter variation drives bearing inner race by the spring perch stepper motor and rotates the measurement of carrying out the next position, until the whole measured zone that measures the bearing inner race groove, calculate the variation of trench diameter at last again according to measurement result.
The principle of work synoptic diagram of the bearing inner race multiparameter vision measurement equipment of a kind of mensuration based on the comparison of the present utility model as shown in Figure 6, equipment comprises radially parameter measuring apparatus, axially parameter measuring apparatus, position transducer, PLC control module, power system, upper computer control module and human-computer interaction module.Described position transducer comprises and wherein is used to detect the whether arrival appointed positions of bearing inner race near switch near switch and cylinder magnetic switch that the cylinder magnetic switch is used to detect the residing position of cylinder.Described power system comprises electric system and pneumatic system, and electric system comprises driver, power chuck rotating stepper motor and spring perch rotating stepper motor, and pneumatic system comprises source of the gas, filtrator, reduction valve, solenoid directional control valve and cylinder.Described human-computer interaction module comprises human-computer interaction interface display, size report display device, printer, button and warning lamp.
The PLC control module is carried out the judgement of bearing inner race present position by the signal of detection position sensor output circularly, and by communicating with upper computer control module, by the control dynamic motion guarantee bearing inner race orderly finish pan feeding, measurement, conveying and sorting work; Upper computer control module is by gathering the view data of directions X and axially measurement camera output, the go forward side by side pre-service and the feature extraction of line data calculate bearing inner race diameter of bore and variation, external diameter and variation, trench diameter and variation, groove radius of curvature and variation and width and variation according to positioning error at last again.Human-computer interaction module is used for the user and imports startup, stops and anxious instruction such as stop by button, and, export directions X by the human-computer interaction interface display simultaneously and axially measure the measurement image and the measured zone of camera by the default qualified tolerance of optical parametric, location parameter, pixel calibrating parameters and part that the human-computer interaction interface display comes optical imaging system behind the input calibration.Size report display device comes the measurement result of each parameter of storing in the video data storehouse by control chart, and shows corresponding process capability index and machine capability index simultaneously.Warning lamp is after charge chute is filled part, or the form by sound and light alarm is notified the user when equipment work is unusual.
Working routine process flow diagram of the present utility model the steps include: as shown in Figure 7
The S7.1 program initialization
After device power supply (DPS) was opened, the central processing unit of PLC and the upper computer software of PC carried out a series of initial work, comprised the initial work of initialization, calibrating parameters, error correction parameter and the I/O mouth of state variable and numerical value in each register.
The push rod that S7.2 Z direction moves on the cylinder drive lifting slide unit moves downward
After the program initialization, whether PLC begins round-robin detection user the instruction input, in case detecting the user presses after the start button, whether PLC has part to exist by judging near switch in the Z direction mechanical arm, if not having the push rod that then moves on the cylinder drive lifting slide unit by the Z direction moves downward, this moment, the oscillating rod type fence separated with push rod, and finished bearing inner race moving between insulated column by deadweight to lower swing.
The S7.3 bearing inner race is carried to axial measurement station from the lifting slide unit
When bearing inner race from the oscillating rod type fence by and when rolling in the lifting slide unit, Z direction mechanical arm clamps bearing inner race, the Z direction moves the bearing inner race that grasps in the cylinder drive Z direction mechanical arm and moves downward, arrive after the clamping station of Y orientation measurement device, the link-type ejecting mechanism pushes to the clamping station with the bearing inner race in the Z direction mechanical arm again, last pneumatic motive force chuck clamping and positioning bearing inner race.
The conveying of S7.4 bearing inner race from axial measurement station to the radial measurement station
After axially parameter measuring apparatus is measured and is finished, bearing release dish is released bearing inner race from pneumatic motive force chuck, bearing drops in the calliper formula carriage by deadweight, traversing cylinder pushes to the bearing inner race in the calliper formula carriage Y direction mechanical arm place again, Y direction mechanical arm grasps after the bearing inner race, and traversing cylinder is back to initial position.After this, lift cylinder pushes to radial measurement station the place ahead with the bearing inner race that grasps in the Y direction mechanical arm, and the Y direction pushes cylinder and bearing inner race pushed to the radially clamping station of parameter measuring apparatus, internal-expansion type spring perch clamping and positioning bearing inner race again.
S7.5 system calibrating and error correction
Before measuring, the optical imaging system of X, Y direction at first carries out position calibration by the position adjustments worktable, and carry out the demarcation of camera pixel by the high precision standard gauge block, after demarcation is finished, note the electric current and the voltage parameter of optical imaging system lighting source, and write down the parameter of camera lens simultaneously, again the error of measuring is revised at last.
S7.6 data collecting card image data
After PC receives the location end signal, the optical imaging system of X, Y direction is caught the two-dimensional geometry characteristic image of part X, Y direction immediately, the two-dimensional geometry characteristic image of part converts digital signal to by A/D, and PC comes images acquired by data collecting card again.
The pre-service of S7.7 data and the feature extraction of mensuration based on the comparison
By the data that collect are carried out various arithmetical operations such as pre-service and feature extraction, specifically comprise the view data smoothing processing, the gray level image binaryzation, rim detection, Hough conversion and sub-pix segmentation, owing to before measuring, finished the pixel of optical imaging system is demarcated and error correction, so according to the reference standard that obtains after demarcating and revising, the positioning error of calculating bearing inner race when adopting comparative measurement method again just can directly be measured the size and the variation of each detected parameters of bearing inner race, at last, PC is divided into certified products according to default size and the variation of allowing with bearing inner race again, reprocessed products and scrap three classes, and measurement result is sent to PLC by serial ports.
The demonstration of S7.8 measurement result and the printing of form
Size report display device comes the measurement result of each parameter of storing in the video data storehouse by control chart, and shows corresponding process capability index and machine capability index simultaneously.
The sorting of S7.9 bearing inner race
PLC is according to testing result, can push the discharging opening of screening on the slide plate by the sorting cylinder and move to certified products discharging opening, reprocessed products discharging opening and scrap discharging opening place in the fixed head, after this bearing inner race rolls down along blow tank by deadweight and just can fall in the corresponding charge chute.
Claims (6)
- One kind based on the comparison the bearing inner race multiparameter vision measurement equipment of mensuration comprise oscillating rod type fence feeding mechanism, axially parameter measuring apparatus, radially parameter measuring apparatus, conveying mechanism, sorting mechanism, PLC control module, upper computer control module and human-computer interaction module, it is characterized in that above frame, being equipped with the oscillating rod type fence feeding mechanism that the bearing inner race (2) in the feed chute (1) is conveyed into one by one axial measurement station; Be equipped with by the axial parameter measuring apparatus of comparative measurement method measurement bearing inner race diameter of bore and variation, external diameter and variation with by the trench diameter of comparative measurement method measurement bearing inner race and the radially parameter measuring apparatus of variation, groove radius of curvature and variation, width and variation at the middle part of frame; Below frame, be equipped be in that bearing inner race in the axial measurement station is transported to the conveying mechanism of radial measurement station and according to measurement result with bearing inner race according to certified products, reprocessed products and scrap are carried out the sorting mechanism of sorting and grouping, the center line of oscillating rod type fence feeding mechanism outlet wherein, axially the center line of the center line of parameter measuring apparatus and conveying mechanism inlet is located along the same line, radially parameter measuring apparatus and axial parameter measuring apparatus are contour, and be positioned at the sorting mechanism porch directly over, radially parameter measuring apparatus and axial parameter measuring apparatus are all by signal wire with to the data acquisition card connection in the upper computer control module of view data execution pre-service and feature extraction, be used for the collection position sensor input signal, and to cylinder, the PLC control module that the motion of mechanical arm and motor is accurately controlled is connected with upper computer control module by serial ports, be used for user input instruction, calibrating parameters and default tolerance, simultaneously in real time display capture image and measurement result, and the human-computer interaction module that carries out data storage and statistical study simultaneously is connected with PLC control module and upper computer control module respectively.
- 2. the bearing inner race multiparameter vision measurement equipment of a kind of mensuration based on the comparison according to claim 1, it is characterized in that described oscillating rod type fence feeding mechanism includes hopper (1), near switch (3), oscillating rod type fence (4), push rod (5), the Z direction moves cylinder (6), Z direction slide rail (7), link-type ejecting mechanism (8), Z direction mechanical arm (9) and lifting slide unit (10), be used for the oscillating rod type fence (4) that the bearing inner race (2) of feed chute (1) is carried is one by one comprised dwang (4-1), preceding insulated column (4-2), middle insulated column (4-3), back insulated column (4-4), barrier board (4-5) and cylinder fork (4-6), wherein dwang is installed on the frame, and be connected with preceding insulated column by revolute pair, the cylinder fork be positioned at push rod (5) directly over, and be connected with barrier board by screw thread; Be used for cylinder fork jack-up, and the push rod (5) of drive oscillating rod type fence (4) swing is installed on the lifting slide unit (10); The Z direction moves cylinder (6) and is installed on the Z direction slide rail (7), and its piston can be pushed to lifting slide unit (10) the place ahead of axial measurement station; The two ends that are used for the bearing inner race (2) that Z direction mechanical arm (9) grasps is pushed to the link-type ejecting mechanism (8) of axial measurement station are connected with lifting slide unit (10) with Z direction mechanical arm (9) by screw thread.
- 3. the bearing inner race multiparameter vision measurement equipment of a kind of mensuration based on the comparison according to claim 1, it is characterized in that described axial parameter measuring apparatus comprises pneumatic motive force chuck (11), axially measure camera (12), light source, camera lens, position adjustments worktable (28) and bearing release dish (16), external diameter with bearing inner race (2) is a positioning reference, and finish the clamping of bearing inner race (2) and the pneumatic motive force chuck (11) of location are comprised chuck body, movable jaw and claw pneumatic drive mechanism wherein are fixed with the metal hemisphere that can improve the workpiece bearing accuracy on the movable jaw; Axially measuring camera (12) is installed on the position adjustments worktable (28) relative with pneumatic motive force chuck (11); Be used for the bearing release dish (16) that tested bearing inner race is pushed on the calliper formula carriage (13) is installed the chuck body of pneumatic motive force chuck (11).
- 4. the bearing inner race multiparameter vision measurement equipment of a kind of mensuration based on the comparison according to claim 1, it is characterized in that described radially parameter measuring apparatus comprises internal-expansion type spring perch (17), radial measurement camera (29), light source, camera lens, position adjustments worktable (28) and bearing release dish (16), internal diameter with bearing inner race (2) is a positioning reference, and finish the clamping of bearing inner race (2) and the internal-expansion type spring perch (17) of location are comprised clamp body, pull bar, internal-expansion type collet chuck and anchor clamps driving mechanism wherein are fixed with the metal hemisphere that can improve the workpiece bearing accuracy on the internal-expansion type collet chuck; Radial measurement camera (12) is installed on the position adjustments worktable (28) of internal-expansion type spring perch (17) one sides; Be used for tested bearing inner race is pushed to the clamp body that bearing release dish (16) on the blow tank (26) is installed in internal-expansion type spring perch (17).
- 5. the bearing inner race multiparameter vision measurement equipment of a kind of mensuration based on the comparison according to claim 1, it is characterized in that described conveying mechanism comprises that calliper formula carriage (13), traversing cylinder (14), cross sliding rail (15), lift cylinder (18), lifting support frame, Y direction push cylinder (19) and Y direction mechanical arm (30), the calliper formula carriage (13) that is used for traversing measured bearing inner ring be positioned at pneumatic motive force chuck (11) under; Traversing cylinder (14) is installed on the cross sliding rail (15), and its piston can be pushed to the bearing inner race of placing in the calliper formula carriage (13) in the Y direction mechanical arm (30); The lift cylinder (18) that is used to promote the measured bearing inner ring is installed in lifting support frame, and its piston can be pushed to the position contour with the radial measurement station with the bearing inner race that grasps in the Y direction mechanical arm (30); Be used for that the Y direction that the bearing inner race that Y direction mechanical arm (30) grasps is pushed to the radial measurement station is pushed cylinder (19) and be installed in Y direction slide rail.
- 6. the bearing inner race multiparameter vision measurement equipment of a kind of mensuration based on the comparison according to claim 1, it is characterized in that described sorting mechanism comprises near switch, sorting cylinder (20), reprocessed products charge chute (21), certified products charge chute (22), scrap charge chute (23), screening slide plate (24), fixed head (25) and blow tank (26), sorting cylinder (20) is installed on the directions X slide rail, and the discharging opening that its piston can push on the screening slide plate (24) moves to reprocessed products charge chute top and scrap charge chute top; Screening slide plate (24) is hindered by the piston that is threaded in sorting cylinder (20), and has the discharging opening that can allow bearing inner race pass through on it; Fixed head (25) is positioned at the top of screening slide plate (24), and has reprocessed products discharging opening, certified products discharging opening and scrap discharging opening on it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200945084U CN202002618U (en) | 2011-03-29 | 2011-03-29 | Multi-parameter visual measuring equipment for bearing inner ring based on comparison measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200945084U CN202002618U (en) | 2011-03-29 | 2011-03-29 | Multi-parameter visual measuring equipment for bearing inner ring based on comparison measuring method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202002618U true CN202002618U (en) | 2011-10-05 |
Family
ID=44705355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200945084U Expired - Fee Related CN202002618U (en) | 2011-03-29 | 2011-03-29 | Multi-parameter visual measuring equipment for bearing inner ring based on comparison measuring method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202002618U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735177A (en) * | 2011-03-29 | 2012-10-17 | 浙江大学 | Comparative measurement method-based multi-parameter vision measurement system of inner ring of bearing |
| CN102735179A (en) * | 2012-06-13 | 2012-10-17 | 苏州致幻工业设计有限公司 | Device and method for measuring diameter of bearing and radius of rolling path |
| CN106352781A (en) * | 2016-09-19 | 2017-01-25 | 核工业理化工程研究院 | LabVIEW-based tubular workpiece measuring device and method |
| CN108955539A (en) * | 2018-08-24 | 2018-12-07 | 河北工业大学 | A kind of bearing machining quality automatic inspection line |
| CN109254008A (en) * | 2018-11-13 | 2019-01-22 | 苏州斯莱克精密设备股份有限公司 | Cylindrical product outside wall surface detection device |
| CN111151471A (en) * | 2020-02-19 | 2020-05-15 | 天台卫冕智能科技有限公司 | Qualified check out test set of bearing internal diameter |
| CN112858329A (en) * | 2020-12-31 | 2021-05-28 | 慈溪迅蕾轴承有限公司 | Image detection method for bearing deformed ring |
-
2011
- 2011-03-29 CN CN2011200945084U patent/CN202002618U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735177A (en) * | 2011-03-29 | 2012-10-17 | 浙江大学 | Comparative measurement method-based multi-parameter vision measurement system of inner ring of bearing |
| CN102735177B (en) * | 2011-03-29 | 2016-01-13 | 浙江大学 | A kind of bearing inner race Multi-parameter visual measuring system of mensuration based on the comparison |
| CN102735179A (en) * | 2012-06-13 | 2012-10-17 | 苏州致幻工业设计有限公司 | Device and method for measuring diameter of bearing and radius of rolling path |
| CN102735179B (en) * | 2012-06-13 | 2015-03-25 | 苏州致幻工业设计有限公司 | Device and method for measuring diameter of bearing and radius of rolling path |
| CN106352781A (en) * | 2016-09-19 | 2017-01-25 | 核工业理化工程研究院 | LabVIEW-based tubular workpiece measuring device and method |
| CN108955539A (en) * | 2018-08-24 | 2018-12-07 | 河北工业大学 | A kind of bearing machining quality automatic inspection line |
| CN108955539B (en) * | 2018-08-24 | 2023-06-09 | 河北工业大学 | Automatic detection line for bearing machining quality |
| CN109254008A (en) * | 2018-11-13 | 2019-01-22 | 苏州斯莱克精密设备股份有限公司 | Cylindrical product outside wall surface detection device |
| CN109254008B (en) * | 2018-11-13 | 2024-01-23 | 苏州斯莱克精密设备股份有限公司 | Outer wall surface detection device for cylindrical product |
| CN111151471A (en) * | 2020-02-19 | 2020-05-15 | 天台卫冕智能科技有限公司 | Qualified check out test set of bearing internal diameter |
| CN112858329A (en) * | 2020-12-31 | 2021-05-28 | 慈溪迅蕾轴承有限公司 | Image detection method for bearing deformed ring |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102735177B (en) | A kind of bearing inner race Multi-parameter visual measuring system of mensuration based on the comparison | |
| CN202002618U (en) | Multi-parameter visual measuring equipment for bearing inner ring based on comparison measuring method | |
| CN102735178B (en) | A kind of housing washer multiparameter automatic measurement system of mensuration based on the comparison | |
| CN102553833B (en) | A kind of slewing parts multistation Multi-parameter visual measuring system and method | |
| CN201978898U (en) | Multi-station/parameter visual measuring and sorting equipment for rotary part | |
| CN103808734B (en) | Auto-parts fully-automated synthesis equipment | |
| CN204953365U (en) | Full automated inspection equipment | |
| CN103920653A (en) | Integrated automatic flatness-detecting, feeding and sorting apparatus and control method | |
| CN107812715A (en) | A kind of automatic detecting machine and its detection method | |
| CN103447800A (en) | Oil seal press fitting detection production line | |
| CN105241392B (en) | The full surface three dimension measuring apparatus and its measuring method of a kind of complicated columnar workpiece | |
| CN208810609U (en) | Plain thrust bearing retainer final product quality detects sorting unit automatically | |
| CN101368974A (en) | System and method for printing defect on workpiece | |
| CN206656692U (en) | A kind of multistation non-destructive detecting device of gas spring bar | |
| CN103522765A (en) | Online laser inkjet printing error correction verifying device for storage batteries | |
| CN108895958A (en) | A kind of automobile speed-changing box pulling fork part method for comprehensive detection and system | |
| CN106248018A (en) | A kind of piston pin size detecting device | |
| KR101673437B1 (en) | detecting device of machine part | |
| CN205317686U (en) | Work piece direction automatic checkout device | |
| CN107101576A (en) | A kind of part method for comprehensive detection and system | |
| CN103383240A (en) | Machine vision two-dimension detecting platform device | |
| CN202933875U (en) | Automatic measuring sorting machine of wedge blocks | |
| CN207789007U (en) | A kind of testing agency of robot work position offset | |
| CN204724483U (en) | Automobile bearing lid on-line checkingi and sorting unit | |
| CN108204796A (en) | A kind of multi-point thickness automatic tester |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111005 Termination date: 20140329 |